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Paul S Person wrote:On Sat, 21 Sep 2024 11:36:48 +0200, D <nospam@example.net> wrote:>
Let me also add that there is zero risk of any brain boiling temperatures
on the earht due to CO2.
>
Note that historically, the maximum amount of CO2 in Earth’s atmosphere
historically was approximately 3,000 to 9,000 ppm. Today we are at an
estimate of 419.3 ppm.
>
Life existed happily, and the planet was covered in vegetation when the
CO2 level was 7x to 21x higher than today, so at least there is no need to
fear any brain boiling. =)
Of course it was covered in vegetation. Vegetation /lives/ on CO2.
And of course there was no brain boiling. Vegetation has no brain.
The period he is referring to was 500 million years ago, so the sun was
5% cooler. Such a cooling will by itself cancel out a huge amount of
GHG warming. Several X, at least.
Something Wiwaxia, Marella, and Anomalocaris were doubtless grateful for.
Next I expect him to bring up the Hadean, where a CO2 concentration of
perhaps 20X allowed archaic bacteria to thrive, and build a wonderful
capitalist system.
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